Create Wire Frames And GUI Prototyping Easily – Free Open Source Tool

While detailing the requirement specification of a project that involves User Interface, often we need to quickly provide prototypes of the Graphic User Interface to meet the end customer’s purpose keeping in mind various techniques to improve your user interface. It definitely helps if you have a nice tool to quickly prototype of the GUI and validate with the customer before the implementation of the GUI. There are many commercial tools available for wire framing and GUI prototyping. There is a free open source tool available under the GPL version 2 for making diagrams and GUI prototyping easy to everyone.

The Pencil is a unique tool build as a free and open source tool for making diagrams and GUI prototyping that everyone can use. It has some nice features that give a touch competition to the commercially available ones.